Removable fibre glass filter



Nov. 1951 M. s. MANow REMovABLE: FBRE GLASS FLTER Fi1ed March lo 1949'7. A tering devioe foI' an enolosure oon1pTising a casing having aninlet opening conneoted to a source of aiI ow and a rectangu1a1' outletopening oonnected to the enclosure; az SubStan tially reotangularsupport nornlally positioned in Said rectangular outlet opening,provided with a gTi11 on one face thereof and having nanges pro vidingguidewayS; 3 Substantially reotangu1aT 1ilte1 unit positioned in saidguideWays and iitting snugly therein so that When the support is positioned in said outlet opening air n1oving through said oaSing paSSesthrough Said gri11 and Said iiltel unit into the enolosuTe; and adaInpe1' alSo pivotally Seoured to said support and fornled With ahandle extending outvvaTdly froIn the faoe of said fran1e which preventsoutward pivota1 n1oven1ent of sa1d suppo1t except When sa1d da1nper 1sclosedl s. MANow.

BEFEBENcES cITED NuInber Na1ne Date 1,385,502 Smith et a1. July 26, 19211,429 811 T ynan sept. 19, 1922 1,968,4=36 Bishop July 31, 1934 2158,966 IIeInIning et aL 1/ay 16, 1939 2 291,383 spenSchied Ju1y 28, 1922404.80? Kubatzky Ju1y 30, 196

